Following on from my 1st post in the Introductions section, I have now had the back opened and here are the pictures .
Hope this is enough detail to identify my watch.

 

Best I can tell is Seamaster from around 1952 with a 354 movement. the 354 movement is listed here as a chronometer,
http://users.tpg.com.au/mondodec/Offcial_Omega_Museum_Calibre_ list.pdf

 

Not all 354 were chronometers. From the OVD:

• Other Cal. 351 Created in 1949, 17 jewels Cal. 354 Created in 1952, 17 jewels Both with central sweep-second hand and some of them with chronometer cert

Honestly, better photos would help but I think the reference is a 2577, as @BenBagbag said in your other thread. It's a Seamaster with a cal. 354 bumper movement from the early 1950's.

 

Why no photos of the dial? Are we supposed to search through your previous posts to find them?

 

Yes. It took me all of about 2 seconds. Here, I'll save you the trouble.

 

It's the principle of the thing.

 

I'll give him the benefit of the doubt. I'm just happy that he bothered to post any photos.

 

Who are you, and what have you done with the @efauser I've come to know?

 

I was wondering the same thing, when I read my post.

 

An out of body experience.

 

Sorry about the quality of the photographs. Thanks for the information.